In ancient Roman international law, a clarigation was a loud, clear call or summons made to an enemy to demand satisfaction for some injury received, without which there would be a declaration of war. Clarigation equates to what the Ancient Greeks called ανδροληψία (androlepsy).
This article incorporates text from a publication now in the public domain: Chambers, Ephraim, ed. (1728). "Clarigation". Cyclopædia, or an Universal Dictionary of Arts and Sciences (1st ed.). James and John Knapton, et al.